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当我试图中检索通过eBay的交易API的所有类别与方法getCategories，我有这样的错误：易趣交易API GetCategories
FailureApplication name invalid.API application "222277" invalid.127Error222277RequestError895E895_INTL_APICATALOG_17257399_R1
头userd是：
$headers = array(
'Content-Type:text/xml',
'X-EBAY-API-COMPATIBILITY-LEVEL: 895',
'X-EBAY-API-DEV-NAME: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx',
'X-EBAY-API-APP-NAME: xxxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxx',
'X-EBAY-API-CERT-NAME: xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx',
'X-EBAY-API-CALL-NAME: GetCategories',
'X-EBAY-API-SITEID: 0'
);
XML postfileds是
$body = <<<BODY
<?xml version="1.0" encoding="utf-8"?>
<GetCategoriesRequest xmlns="urn:ebay:apis:eBLBaseComponents">
<RequesterCredentials>
<eBayAuthToken>auth token......</eBayAuthToken>
</RequesterCredentials>
<CategorySiteID>0</CategorySiteID>
<DetailLevel>ReturnAll</DetailLevel>
</GetCategoriesRequest>
BODY;
和我的卷发代码是：
$connection = curl_init();
curl_setopt($connection, CURLOPT_URL, $endpoint);
curl_setopt($connection, CURLOPT_SSL_VERIFYPEER, 0);
curl_setopt($connection, CURLOPT_SSL_VERIFYHOST, 0);
curl_setopt($connection, CURLOPT_HTTPHEADER, $headers);
curl_setopt($connection, CURLOPT_POST, 1);
curl_setopt($connection, CURLOPT_POSTFIELDS, $body);
curl_setopt($connection, CURLOPT_RETURNTRANSFER, 1);
$response = curl_exec($connection);
curl_close($connection);